Help Please!

Help Please!

Help me please.. for two days now my LoL Mac Beta Client has been doing this...

The launcher loads and I am able to get all the way past where I choose my champion/spells,etc and after I lock my champion in and I start to enter a game, LoL will go full screen, about 3 seconds later it'll go back to the desktop and the only thing I see on my dock is an application titled "adl" ... if I click this application it just shows a windowed black screen. HELP ME PLEASE DETOX.